Scrap metal and concrete are an essential resource in the game. Without these resources, it is hard to survive in the game. For most of the upgrades and equipment, these two resources are essential. That is one of the reasons why these resources are available in abundance in Iron Wastelands.
In this gameplay, I visited Iron wastelands and cleared all the Zombies out there to collect Scrap metal and concrete. Every time I go low on these resources, I visit Iron wastelands and Quiet grove near the shelter to collect these resources. There are also other places where these items can be collected but this place is good because the level of enemies is low and easy to defeat.